Watchcase-pendant and bow-fastener



(No Model.)

W. HELLBERG. WATGHGASE PENDANT AND BOW FASTENER.

Patented Jan. 16, 1894.

5 Y E N m U A UNITED STATES PATENT OFFICE.

WVILLIAM HELLBERG, OF FARGO, NORTH DAKOTA.

WATCHCASE-PENDANT AND BOW-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 513,013, dated January16, 1894.

Application filed May 20, 1898. Serial No.474,856. (No model.)

T0 aZZ whom it may concern:

Be it known that I, WILLIAM HELLBERG, a citizen of the United States,residing at Fargo, 1n the county of Cass and State of North Dakota, haveinvented certain new and useful Improvements in atch-Pendants; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

My invention relates to certain improvements in the construction ofwatch pendants, and particularly those used in connection withstem-winders, although its use is capable of a much wider scope.

In the case of stem-winders there is much strain and wear of the capattached to the spindle and fitting over the pendant-body, therebycausing the latter to become quickly worn out. The expense, time andtrouble of renewal and repairs are considerable.

It is the purposeof my invention to avoid these ditficulties by theemployment of a construction which will allow the worn out part to bequickly renewed and a new one substituted.

To this end my invention consists in the peculiar features andcombinations of parts more fully described hereinafter and finallypointed out in the claims.

In the accompanying drawings, Figure 1 represents a perspective view ofthe pendantbody with the cap portion removed; Fig. 2 a longitudinalsection; Fig. 3 a perspective view of the cap removed; Fig. at a detailview of the pendant ring.

The reference letter a denotes the pendant body which is attached asusual to the watch casing. Extending upwardly from the body is a pair ofspiral arms I) separated to leave spiral passages c wider than the arms.These latter are thin and flat-faced, and are made by first making theupper portion of the pendant body tubular or cylindrical, then cuttingout of the tube the helical passages c.

is adapted to screw down over the spiral arms b, the interior beingprovided with projecting screw threads d. These threads are given awidth equal to that of the passages c, and a thickness equal to the armsI) to leave the interior for the operation of the winding spindle.

To form a wider bearing surface for the trunnions of the pendant ring,lprovide segmental bearing sections 6, e, which project laterally fromthe opposite sides of the pendant body and cap respectively, so thatwhen assembled the two sections will embrace the trunnions. The pendantring instead of being round, is made substantially U-shaped withinturned straight ends forming trunnions f, the inner ends of which areprovided with flat heads f which engage the inside of the pendant bodyand prevent the ring from pulling loose. The lower edge of the cap iscut away to form an opening g on either side of the lower section of thebearing in order to permit the cap to turn without coming in contactwith said section, and at the same time allow the sides of the cap tocover the pendant body as much as possible.

\Vhen the parts are assembled and in operative adjustment as in Fig. 2,they are fixed in place by means of small screws 7b which pass throughthe top of the cap into the helical arms respectively. It will beobserved that the upper ends of the arms b terminate at the top of thecap, so as to allow the milled thumb disk on the winding spindle to fitover the cap.

The preferred construction of my device having been described, I willnow set forth the manner of putting it together and taking it apart asin the operation of replacing the old part with a new one. The trunnionsof the pendant ring are first placed in the bearing sections 6 of thecap, and the latter placed over the ends of the helical arms in such away that the trunnions will enter the helical passages between the arms.Now upon turning the cap and ring together, the trunnions will pass downthe passages until they come to the end, whereupon the two bearingsections 2, e will come together and completely embrace the trunnionsand hold them and hence the ring, securely in place. The small screws 7Lare now applied and the operation consider myself entitled toall'suehvariations' as come within the spirit and scope of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent,is-

1. The combination ina watchpendant-0t a pendant body having helicalarms extend-i ing therefrom, and a sleeve or cap having:

threads or ribs on its'interior, which sleeve is adapted to fit over thehelical arms and have its threadsor-ribs'enter the space between. thearms,the sleeve or cap beingarrang'edtoh bind at its "lower end againstthe pendant ring and thereby'hold it in position, substantially asdescribed.

2. The'combi'nati'on in awatoh pendant,of

I a pendant body having two helical arm's -se-z cured thereto, a sleeveor cap having threads or ribs on its interior adapted to fit over thehelical arms and have its 't hreadsor ribs occur in the space betweenthe said arms, the

sleeve or cap being arranged to bind at its lower end against thependant ring and thereby hold it imposition, and fastening devicespassing-through the cap 'or sleeve and into the helical arms whereby thecap is prevented from working off, substantially as described.

3. The combination with a watch pendant, of a pendant body havingtwohelical arms secured thereto'and a curved indentation or hearingplaced at the base of and between the arms, a pendant ring adapted tohave a 1 bearing in the curved indentation, and a sleeve or cap havingthreads or ribs on its interior and curved indentations in its loweredge adapted to "screw over-the body,-theribs or threads being adaptedto occur in the space between the helical arms and the indentations onthe sleeve orcapto bind aga'inst the upper portion of the pendant ringand thereby-confine it'in the indentation on the pendant body,substantially as described.

Intestimony whereof I aftix'my' signature in spresence'of two witnesses.

WILLIAM P IE'IJLBERG.

Witnesses:

W.'G. LAI'ZNER, W. S. HOOPER.

